What is streptavidin HRP?

What is streptavidin HRP?

HRP-Conjugated Streptavidin consists of streptavidin protein that is covalently conjugated to horseradish peroxidase (HRP) enzyme (RZ > 3.0). Streptavidin binds to biotin and the conjugated HRP provides enzyme activity for detection using an appropriate substrate system.

What is HRP in immunohistochemistry?

Horseradish peroxidase (HRP) is a 44-kDa protein that catalyzes the oxidation of substrates in the presence of hydrogen peroxide, resulting in a colored product or the release of light as one product of the reaction (chemiluminescence).

Is streptavidin HRP light sensitive?

Yes HRP is light sensitive. It is important to avoid excessive exposure to light, Therefore using dark moisture chember is very useful during these steps.

What is streptavidin in Elisa?

Biotinylated secondary antibody and streptavidin-HRP are commonly used in the ELISA to improve the limit of detection (LOD). Streptavidin is a tetrameric protein with a molecular weight of 60 kDa; it has a high binding affinity to biotin (in the low femtomolar range) and four biotin binding sites [36].

What is HRP used for?

Horseradish peroxidase (HRP) is an enzyme used to amplify signal in photometric assays by catalyzing the conversion of chromogenic or chemiluminescent substrates for the detection of targets such as proteins, carbohydrates, and nucleic acids.

How do HRP and DAB interact?

HRP catalyzes the conversion of chromogenic substrates (e.g., TMB, DAB, ABTS) into colored products, and produces light when acting on chemiluminescent substrates (e.g. Enhanced Chemiluminescence by luminol).

How do you dilute streptavidin?

Streptavidin-HRP Summary Do Not Freeze. For use in ELISAs, dilute to the working concentration specified on the vial label using 1% BSA/PBS or Reagent Diluent Concentrate 2 (Catalog # DY995) diluted 1:10 in deionized water. For use in Western blots, the suggested dilution is 1:200-1:2000 in an appropriate diluent.

What is HRP in ELISA?

One commonly used enzyme conjugate in ELISA is horseradish peroxidase. Horseradish peroxidase (HRP) is a 40,000 Dalton protein, which catalyzes the reduction of hydrogen peroxide (H2O2) to water (H2O) [1].